Geodesic
Representation of unimodular matrices in the form $DOTU$ for $n=3$
Matematičeskie zametki, Tome 18 (1975) no. 2, pp. 213-221 
Kh. N. Narzullaev. Representation of unimodular matrices in the form $DOTU$ for $n=3$. Matematičeskie zametki, Tome 18 (1975) no. 2, pp. 213-221. http://geodesic.mathdoc.fr/item/MZM_1975_18_2_a6/
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     author = {Kh. N. Narzullaev},
     title = {Representation of unimodular matrices in the form $DOTU$ for $n=3$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {213--221},
     year = {1975},
     volume = {18},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1975_18_2_a6/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

A proof is given of the representation of any unimodular matrix of order three as the product of a diagonal, orthogonal, triangular and unimodular integral one.